I have run these shoes through a ring and they are still holding up very well. So far in these things I've run 10K, 7 half marathons, a full marathon and a 50K desert ultramarathon. .And that's not all the road miles I've ridden in these shoes during my regular runs over several weeks. Perhaps. I don't know how many miles I have on them but I know they're over 200 and they still have their bounce. And the tread still holds up well (in fact, I was worried trail racing would erase them) but that didn't help, aside from a few lugs getting stuck in the soles. The only thing I didn't like were the too long laces that came with the shoes. But I replaced them with lockable laces, so it didn't matter. I also like the fit. Dense heel and wide toe